Carton construction



N0V 23, 1965 R. F. ANDERSON CARTON CONSTRUCTION 3 Sheets-Sheet l FiledAug. 16, 1963 27" f3 27a Nov. 23, 1965 R. F. ANDERSQN 3,219,257

CARTON CONSTRUCTION Filed Aug. 16, 1965 3 Sheets-Sheet 2 Nov. 23, 1965R. F. ANDERsoN 3,219,257

CARTON CONSTRUCTION Filed Aug. 16, 1963 5 Sheets-Sheet 5 United StatesPatent O M' 3,219,257 CARTN CONSTRUCTEGN Ralph F. Anderson, 332 CalvinPark Blvd., Rockford, ill. Filed Aug. 16, 1963, Ser. No. 302,670 6Claims. (Cl. 229-51) This invention relates to cartons and the blankstherefor.

This invention is particularly directed to a generally rectangularcarton as a type havin-g four side walls and end flaps on the side wallswhich are foldable inwardly to `close and seal the ends of the carton,and which carton has a tear line extending along one side wall and alongthe end flaps on that side wall to enable opening of an adjacent sidewall of the carton, hereinafter sometimes referred to as a cover. In acarton of this type, it is necessary to seal the several end flaps onthe carton together in such a manner as to permit portions of the endflaps to open with the cover, while other portions of the end flapsremain joined together to hold the remaining sides of the carton inposition. In the prior cartons of this type, the end flaps have beenconstructed and arranged so that it is necessary to apply adhesive toseveral end flaps disposed in relatively transverse planes, in order toseal the several flaps together in such a manner as to permit thesubsequent opening and reclosing of the coverwall of the carton. Theapplication of adhesive to flaps on the carton disposed in relativelytransverse planes, however, markedly complicates the problem ofadhesively sealing the ends of the carton.

Cartons of this type are commonly preformed and fed into a fillingmachine in a flattened condition, and the filling machine then opens thecarton; closes the lower end flaps; fills; and then closes the upper endflaps. When a heat sealable adhesive is applied to the carton flapsdisposed in relatively transverse planes, it is difficult to adequatelyheat soften the adhesive on the several end flaps prior to infolding ofthe same, and it is therefore the present practice to infold the flapsand then apply heat to the closed flaps after the container is filled,to soften the adhesive and seal the end flaps. With some products suchas frozen comestibles, it is very diflicult to apply adequate heat tothe closed end flaps to seal the same, without also adversely affectingthe product in the carton.

An important object of this invention is to provide a carton of the typedescribed having a tear line along one side to enable opening of anadjacent cover side of the carton, and which Carton is constructed andarranged to simplify closing and sealing of the end flaps on the carton.

Another object of this invention is to provide a carton of the typedescribed in which the end flaps are constructed and arranged so as toenable application of adhesive to only one end flap on each end of thecarton for sealing the ends of the carton while permitting thesubsequent reopening of the cover side of the carton.

Yet another object of this invention is to provide a container of thetype described which employs a heat sealable adhesive for joining theend flaps in such a manner as to permit subsequent opening of the coverside of the carton, and which carton avoids necessity of heating the endflaps after they are folded to their closed position to thereby avoiddeleterious effects on the product, and which carton instead permitsheat softening of the adhesive on the adhesive coated end flap prior toinfolding of the same.

These, together with other objects and advantages of this invention,will be more readily appreciated as the same becomes better understoodby reference to the following detailed description when taken inconnection with the accompanying drawings wherein:

FiG. 1 is a layout View showing the inner side of a 3,Zl9,257 PatentedNov. 23, 1965 ICC carton blank constructed in accordance with thepresent invention;

FIG. 2 is a layout view illustrating the outer side of the carton blank;

FIG. 3 is a side view of the carton showing the same in a flattenedcondition;

FIG. 4 is a perspective View of an erected carton with the end flapsopen;

FIG. 5 is a perspective view of the carton after the end flaps have beenclosed and sealed and the carton opened along the tear line to form ahinged cover;

FIGS. 6 and 7 are diagrammatic views illustrating the method andapparatus of erecting; infolding and sealing the bottom flaps; lling;and infolding and sealing the top flaps of the carton; and

FIGS. 8-12 are end views of the carton illustrating the sequence inwhich the end flaps are folded to close and seal the ends of the carton.

The carton of the present invention is formed from a blank convenientlyof cardboard or the like and in general includes first and secondopposed side walls 10 and 11, a third side wall 12 which is connectedalong fold lines 13 and 14 to one edge of each of the side walls 1t) and11, and a fourth side wall composed of inner and outer overlappingpanels designated 15 and 16 respectively. The inner panel 15 isconnected to one edge of the side wall 10 along a fold line 17 and theouter panel 16 is connected to the side wall 11 along a fold line 18.When filled, the carton is adapted to rest on one side Wall while theother side wall forms a hinged reclosable cover for the carton.Accordingly, the first, second, third and fourth side walls arehereinafter sometimes referred to in the claims as the bottom, top, rearand front walls, respectively.

The first side Wall 1t) has first end flaps 21a and 2lb connected toopposite ends along fold lines 22, and the second side wall 11 hassecond end flaps 23a and 23b connected to opposite ends along fold lines24. The third side wall 12 has end flaps 25a and 251; connected toopposite ends along fold lines 26 and the outer panel 16 has end flaps27a and 27h connected to opposite ends along fold lines 28. The innerpanel 15 is also preferably formed with end flaps 29a and 29h which areconnected to opposite ends of the inner panel along fold lines 31.

The outer panel 16 and its attached end flaps 27a and 27b are formedwith a tear line that extends lengthwise of the panel and along the endflanges to enable separation of the outer panel and its flanges intofirst and second panel sections designated 16 and 16, and first andsecond ilap sections or tabs 27 and 27 which are respectively connectedto the first and second panel sections. While the tear line can beformed in various different ways, it is preferably formed as best shownin FIGS. 1 and 2 by spaced rows of perforations that define a tear stripT therebetween. Preferably, one of the end flaps on the outer panel suchas the lower end flap 27b is notched as indicated at 35 at oppositesides of the tear strip to provide a projecting tab T' which can beeasily gripped between the fingers and thumb of the user to remove thetear strip.

The carton is preferably preformed in a flattened condition with theouter panel 16 and the inner panel 1S overlapped to form the fourth sidewall of the container. The second section 16" of the outer panel 16 issecured to the inner panel. While this can be achieved in various Ways,it is convenient to provide a strip of adhesive designated 36 on theouter face of the inner panel 15 or, alternatively, on the inner faceIof the outer panel section 16, and Which adhesive strip advantageouslyextends along the end flaps 29a and Z911 on the inner panel. The

adhesive can be of any suitable type which will seal the inner and outerpanels together when the carton blank is folded to a flattened conditionas shown in FIG. 3 with the inner and outer panels overlapping and maybe, for example, a heat scalable adhesive on a drying type adhesive. Aspreviously noted, the adhesive strip 36 preferably extends along theflaps 29a and 29h lso as to also adhesively secure these flaps to thesecond iiap sections 27 on 0pposite ends of the outer panel 16. When thecarton is preformed in a flattened condition as shown in FIG. 3, thefourth side wall formed by the overlapping panels and 16 and the firstside wall 10 are disposed substantially coplanar with each other at oneside of the carton and the second and third side wall-s 11 and 12disposed substantially coplanar with each other at the other side of thecarton.

The end flaps on opposite ends of the carton are folded inwardly to forma closure for the ends of the carton. In accordance with the presentinvention, the end fiaps on the respective ends of the fourth side wall16 are folded in last and adhesive is applied to the underside of thoseend flaps to seal the ends of Ithe carton in such a manner as to enableopening of one side wall 11 when the tear strip T along the fourth sidewall is removed. The first end flaps 21a are preferably dimensioned toextend completely across the end of the carton, as shown in FIG. 9, toclose the end of the carton and accordingly, have a length to extendcompletely across the ends of the side wall 1i) and a width to extendfrom the score line 22 a distance approximately equal to the width ofthe adjacent side walls 12. The end flaps 23a and 23h on the oppositeside wall 11 are substantially narrower than the flaps 21a andpreferably extend from the score line 24 a distance which isapproximately equal to the width of the first panel sections 16 of theouter panel 16 to form a cover flange therewith in a manner descrbedhereinafter. third end flaps 25a and 25b are dimensioned to extend fromtheir respective third side wall 12 part way across the ends of thecarton and, preferably, the width of the third end liaps are correlatedwith the width of the end flaps 29a and 29b on the inner panel 15 of thefourth side wall so that the end flaps extend adjacent to each other butdo not overlap when they are folded inwardly, as is best shown in FIG.5. The end flaps 27a and 27 b on the outer panel 16 are somewhat widerthan the flaps 29a and 29h on the inner panel 15 to extend bey-ond theflaps on the inner panel and overlap the flaps 25a and 25h on therespective ends of the carton, when the fourth end flaps are foldedinwardly.

In closing each of the cartons, the first end fiaps such as 21a arefolded inwardly as shown in FIG. 9 to substantially close the ends ofthe carton. In the preferred ernbodiment of the invention illustratedherein, the second end flaps such as 23a are then folded inwardly andoverlap a por-tion of the first end liaps 21a as shown in FIG. 10. Thethird end flaps 25a are then folded inwardly and overlap portions of theend flaps 21a and 23a, as shown in FIG. 11. The fourth end aps such as27a are then folded inwardly and overlie portions of the first, secondand third end flaps (see FIG. 12). An adhesive is applied to an adhesivearea 41 on the underside of the first flap section 27 of the end iiaps27a and 27b for adhesively securing the first ap section to the secondend flap 23a on the respective end of the carton. In the preferred formof the invention wherein the second end flaps 23a, 23h are foldedinwardly before the respective third` end flaps 25a, 25h are infolded,the third end flaps are notched or cut away as indicated at 42, in thearea that underlies the first flap section 27 of the fourth flap so thatthe first fiap section directly overlies and is adhesively secured tothe respective second flap. An adhesive is also applied to a secondadhesive area 43 on the `second flap sections 2'7" of each of the endflaps 27a and 27h, and which adhesive area is located in that portion ofthe end flaps 27a and 2717 that overlies the third end fiaps 25a and 25brespec- The tively, to adhesively secure the second flap sections 27 ofthe flaps 27a and 27'b to the respective third end flap. An adhesive isalso preferably applied to a third adhesive area 44 on the end flaps 29aand 29!) attached to the inner panel 15. As previously noted, the endflaps 29a and 29!) are preferably proportioned so that they extendadjacent to, but do not overlap, the third end flaps 25a and 25h. Theadhesive on the adhesive area 44 therefore functions to adhesivelysecure the iiaps 29a and 29b on the inner panel directly to the firstend flaps 21a and 21b. In addition, the second end fiaps 23a and 23h andthe respective flaps 29a and 29b on the inner panel are preferably cutaway in adjacent corners as indicated at 47 and 48 so that the adjacentedges of these end flaps extend generally complementary to each otherbut do not overlap, when the fiaps are folded inwardly.

The adhesive on area 41, 43 and 44 is preferably of the heat sensitivetype which is heat softenable and which will harden rapidly upon coolingto ambient temperature. The adhesive is preferably applied to the areas41, 43 and 44 while the carton is still in `the blank form such as shownin FIGS. 1 and 2, and thereafter is heat softened during the erecting,filling and closing of the carton to effect heat sealing of the endflaps together. The successive steps of erecting the carton, infoldingand sealing of the lower flaps, filling, infolding and sealing of theupper fiaps, and an apparatus for performing these steps isdiagrammatically illustrated in FIGS. 6 and 7. The carton erecting,filling and closing apparatus may conveniently be of the type disclosedin the patent to Anderson, No. 2,612,016, modified in the mannerdescribed hereinafter to effect heating of the adhesive on the end flapsattached to the fourth side wall and to effect closing of the severalend flaps in proper sequence. In general, the apparatus includes amagazine (not shown) for receiving a `stack of flattened cartons such asshown in FIG. 3 and a transfer mechanism 50 having longitudinally spacedcarton engaging ngers 51, 52, 53, 54, 55 and 56 for advancing thecartons in step fashion past the several instrumentalities. The cartonsare squared as they are advanced by the fingers 5l and a mechanism suchas 61 is provided for infolding the first flap on the lower end of thecarton, as shown at the left in FIG. 1. A means, such as a second guideshoe 62 is provided for infolding the second end flap on the lower endof the carton and a further means such as a third guide 63 is providedfor infolding the third end flap on the lower end of the carton. Afourth guide 64 is provided for infolding the fourth tiap on the lowerend of the carton. The transfer mechanism 50 advances the cartons instep fashion a distance somewhat greater than the spacing between theadjacent carton engaging fingers 51-56 and the first, second, third andfourth end flaps on the lower end of the carton are sequentially foldedinwardly 4by the first, second, third and fourth flap folders as thecartons are advanced to a filling station 66. As previously noted, theadhesive for sealing the lower end liaps is all provided on the fourthend flap and the adhesive on this flap is preferably heated prior toinfolding of the fourth end flap. This is achieved by a heating means 68disposed alongside the path of travel of the fourth end flaps on thecarton as they are advanced between the carton erecting and the cartonfilling stations. The heating means can comprise either a heated plateor bar which is positioned to engage the outer faces of the fourth endflaps as the cartons are advanced, to heat soften the adhesive byheating through the end flaps, or it may comprise a radiant type heatersuch as an infra red lamp positioned to direct the rays against theinner face of the lower end flaps, prior to infolding of the same. Theadhesive on the fourth end flap is therefore softened prior to infoldingof the same and, when it is pressed against the other end flaps on thelower end of the carton, the adhesive is rapidly cooled and set.

The filling apparatus may be of any conventional construction and, asshown, includes a nozzle 71 for dispensing material and an elevator 72for raising the container into position around the nozzle. The containermoves downwardly as it is filled and, when the upper end of thecontainer reaches the lower end of the nozzle, an apparatus (not shown)is provided for operating the transfer mechanism to move the filledcontainer crosswise of the nozzle. A second heater 75 which may be ofeither of the types described in connection with the heater 68, isprovided alongside the path of travel of the fourth end flaps on theupper end of the carton to heat soften the adhesive on that end ap priorto infolding of the same. The first, second, third and fourth end flapson the upper end of the carton are then sequentially folded inwardly byan apparatus including a first flap folder 81, a second flap foldingshoe 82, a third flap guide shoe 83 and a fourth ap guide shoe 84. Aflap hold down shoe 85 is advantageously provided at the end of the flapfolding mechanism to maintain the flaps in a closed position for asufficient time to assure adequate cooling and sealing of the end flaps.Obviously, the details of construction of the carton erecting and flapfolding apparatus can differ from that diagrammatically illustrated inFIGS. 6 and 7 and any suitable flap folding apparatus may be employed toeffect the aforementioned folding sequence.

With the above described arrangement, it will be seen that adhesive onthe fourth end flaps is heated prior to infolding of the fourth endfiaps. This not only facilitates heat softening of the adhesive, sinceit is not cooled by the product in the cartons, but also avoidsdeleterious effects on the product in the carton due to the applicationof heat. Moreover, it permits the heaters such as 63 and 76 to bepositioned intermediate the ends of the carton erecting, filling andfolding apparatus instead of requiring an appendage on the end of theapparatus for heat sealing, as in the prior arrangements.

When the several end flaps are folded inwardly and the fourth end flaps27a and 27b heat sealed to the other end flaps' in the manner previouslydescribed, the ends of the carton are closed and sealed. The carton isthereafter opened by removing the tear strip T which separates the outeipanel 16 into first and second sections 16 and 16 and also separates theend flaps 27a and 27b on the outer panel into first and second flapsections 27 and 27. The flap sections 27 are adhesively secured to thesecond end flaps 23a and 23b on the second side wall 11 so that thefirst panel sections 16', the first fiap sections 27 and the second endflaps 23a and 23h form a flange around the second side wall 11. Thesecond side Wall 11 is hingedly connected to the third side Wall 12 sothat the second side wall forms a flanged reclosable cover for thecarton. The second panel section 16 is adhesively bonded to the firstpanel section and the second ap sections 27" are adhesively bonded tothe third end flaps 25a and also to the first flaps 21a so as tomaintain the lower portion of the carton in assembled condition when thecover is opened (as shown in FIG. 5).

From the foregoing, it will be seen that the carton and blank thereforemploys a tear line along one side to enable opening of an adjacentside, and that the several end flaps on the carton are constructed andarranged so that the adhesive for sealing the end flaps which form apart of the cover and also the end fiaps which form a part of the bottomof the carton are all provided on one end flap. This markedlyfacilitates the adhesive securing of the several end flaps since it onlyrequires heating of one end flap and since the end flap can be heatedprior to infolding of the same.

I claim:

1. A generally rectangular carton formed of a single blank cut andscored to provide a carton having top and bottom Walls; a rear wallconnected to one edge of each of the top and bottom walls and a frontwall including an outer front panel and an inner panel respectivelyconnected to one edge of the top and bottom walls; end

6 flaps on each of the top, bottom and rear walls and on the outer frontpanel; the outer front panel and the end flaps on that panel having atear line extending lengthwise intermediate the side edges of the frontWall for separating the outer front panel into an upper panel sectionconnected to the top wall and a lower panel section and for separatingthe end fiaps on the outer front panel into upper and lower tabsrespectively connected to the upper and lower panel sections; meansbonding the lower panel section to the inner panel; characterized inthat the flaps lon the bottom wall, top Wall, rear wall and outer frontpanel are adapted to be folded inwardly in that order; the end flaps onthe rear wall and outer front panel being dimensioned and shaped so thatthe lower tab overlaps the end flap on the rear wall and the upper taboverl-aps the end flap on the top wall without overlapping the end iiapon the rear wall when all of the end flaps on the carton are foldedinwardly to close the end of the carton and an adhesive is c-arried onthe underside of the upper and lower tabs in an area and loca` tion tobond the upper and lower tabs to the end flaps on the top and rear wallsrespectively.

2. A generally rectangular carton formed of a single blank cut andscored to provide a carton having top and bottom walls; a rear wallconnected to one edge of each of the top and bottom walls and a frontwall including an outer front panel and an inner panel respectivelyconnected to one edge of the top and bottom walls; end flaps on each ofthe top, bottom and rear walls and on the -outer front panel; the outerfront panel and the end fiaps on that panel having a tear line extendinglengthwise intermediate the side edges of the front wall for separatingthe outer front panel into an upper panel section connected to the topwall and Ia lower panel section and for separating the end fiaps on theouter front panel into upper and lower tabs respectively connected tothe upper and lower panel sections; means bonding the lower panelsection to the inner panel; characterized in that the fiaps on thebottom wall, top wall, rear wall and outer front panel are adapted to befolded inwardly in that order; the end flaps on the bottom wall having alength and width to substantially close the end of the carton whenfolded inwardly; the end fiaps on the top Wall having a width measuredfrom the top wall approximately equal to the width of said upper panelsection; the end flaps on the rear wall and the end flaps on said outerfront panel having a combined width in the portion adjacent to saidlower tabs which is greater than the width of the top wall whereby thelower tab is adapted to overlie the end flap on the rear wall and acombined width in the portion adjacent to said upper tabs which is lessthan the Width of said top wall whereby the upper tabs overlie the endflaps on the top wall without overlapping the end fiaps on the rearwall, and an adhesive c-arried on the underside of the upper and lowertabs in an area and location to bond the upper and lower tabs to the endflaps on the top and rear walls respectively.

3. A generally rectangular carton formed of a single blank cut andscored to provide a carton having top and bottom walls; a rear wallconnected to one edge of each of the top and bottom walls and a frontwall including an outer front panel and an inner panel respectivelyconnected to one edge of the top and bottom walls; end fiaps on each ofthe top, bottom and rear walls and on the inner and outer front panels;the outer front panel and the end flaps on that panel having a tear lineextending lengthwise intermediate the side edges of the front wall forseparating the outer front panel into an upper panel section connectedto the top wall and a lower panel section and for separating the endflap on the center front panel into upper and lower tabs respectivelyconnected to the upper and lower panel sections; means bonding the lowerpanel section to the inner panel, the end flaps on the bottom wallhaving a length and width to substantially close the end of the cartonwhen folded inwardly; the upper and lower tabs on the outer front panelhaving a width measured from the outer front panel greater than thewidth of the end llaps on the inner panel whereby the upper and lowertabs project beyond the end llaps on the inner panel, the end flaps onthe rear panel and the inner front panel having a combined width nogreater than the width of the top wall whereby the end flaps on the rearwall and inner panel are adapted to be folded across the end of thecarton without overlapping, the end aps on the rear Wall and the end apson Said outer front panel having a combined width in the portionadjacent to said lower tabs which is greater than the width -of said topwall whereby the lower tab is adapted to overlie the end flap on therear wall, and an adhesive carried on the underside of the end flap onthe inner panel and on the underside of the upper and lower tabs in anarea and location to bond the end -ap on the inner panel to the end flapon the bottom wall and to bond the upper and lower tabs to the end flaps-on the top and rear walls respectively.

4. The combination of claim 3 wherein the end flaps on the inner paneland the end flaps on the top panel have adjacent corners thereof cutaway along lines such that the end flaps on the top wall and inner panelare adapted to be folded inwardly without overlapping.

5. A generally rectangular carton formed of a single blank cut andscored to provide a carton having top and bottom walls; a rear wallconnected to one edge of each of the top and bottom walls and a frontwall including an outer front panel and an inner panel respectivelyconnected to one edge of the top and bottom walls; end flaps on each -ofthe top, bottom and rear walls and on the inner and outer front panels;the outer front panel and the end flaps on that panel having a tear lineextending lengthwise intermediate the side edges of the front wall forseparating the outer front panel into an upper panel section connectedto the top wall and a lower panel section and for separating the endflap on the outer front panel into upper and lower tabs respectivelyconnected to the upper and lower panel sections; means bonding the lowerpanel section to the inner panel, the flaps on the bottom wall, topwall, rear wall and front wall being adapted to be folded inwardly inthat order, the end flap on the bottom wall having a length and width tosubstantially close the end of the carton when folded inwardly; the endflap on the top wall having a width measured from the top w-allapproximately equal to the width of the upper panel section; the endflaps on the inner panel and the rear wall having a combined width nogreater than the width of the top wall whereby the end flaps on the rearwall Iand inner panel are adapted to be folded across the end of thecarton without overlapping, the upper and lower tabs on the outer frontpanel extending Aoutwardly from the end ilaps on the inner front panel;the lower tab and the end flap on the rear panel having a combined widthmeasured from the respective front and rear walls greater than the widthof the top wall whereby the lower tab is adapted to overlap the end flapon the rear panel when folded inwardly; the upper tab and the end flapon the rear panel having a combined width measured from the respectivefront and rear Walls which is less than the width of the top wallwhereby the upper tab is adapted to be folded inwardly and Ioverlap theend ap on the top wall without overlapping the end ap on the rear wall;and an adhesive carried on the underside of the end flap on the innerpanel and on the underside of the upper and lower tabs in an area andlocation to bond the end ap on the inner panel to the end flap on thebottom panel and to bond the upper and lower tabs to the end aps on thetop and rear walls respectively.

6. The combination of claim 5 wherein said upper and lower tabs haveapproximately the same width measured from the front wall, the end apson the rear wall being cut away in the portion that registers with theupper tab when the flaps are folded inwardly.

References Cited by the Examiner UNITED STATES PATENTS 3,111,255 11/1963Skowronski 229--51 3,131,851 5/1964 Pace 229-51 FRANKLIN T. GARRETT,Primary Examiner.

1. A GENERALLY RECTANGULAR CARTON FORMED OF A SINGLE BLANK CUT ANDSCORED TO PROVIDE A CARTON HAVING TOP AND BOTTOM WALLS; A REAR WALLCONNECTED TO ONE EDGE OF EACH OF THE TOP AND BOTTOM WALLS AND A FRONTWALL INCLUDING AN OUTER FRONT PANEL AND AN INNER PANEL RESPECTIVELYCONNECTED TO ONE EDGE OF THE TOP AND BOTTOM WALLS; END FLAPS ON EACH OFTHE TOP, BOTTOM AND REAR WALLS AND ON THE OUTER FRONT PANEL; THE OUTERFRONT PANEL AND THE END FLAPS ON THAT PANEL HAVING A TEAR LINE EXTENDINGLENGTHWISE INTERMEDIATE THE SIDE EDGES OF THE FRONT WALL FOR SEPARATINGTHE OUTER FRONT PANEL INTO AN UPPER PANEL SECTION CONNECTED TO THE TOPWALL AND A LOWER PANEL SECTION AND FOR SEPARATING THE END FLAPS ON THEOUTER FRONT PANEL INTO UPPER AND LOWER TABS RESPECTIVELY CONNECTED TOTHE UPPER AND LOWER PANEL SECTIONS; MEANS BONDING THE LOWER PANELSECTION TO THE INNER PANEL; CHARACTERIZED IN THAT THE FLAPS ON THEBOTTOM WALL, TOP WALL, REAR WALL AND OUTER FRONT PANEL ARE ADAPTED TO BEFOLDED INWARDLY IN THAT ORDER; THE END FLAPS ON THE REAR WALL AND OUTERFRONT PANEL BEING DIMENSIONED AND SHAPED SO THAT THE LOWER TAB OVERLAPSTHE END FLAP ON THE REAR WALL AND THE UPPER TAB OVERLAPS THE END FLAP ONTHE TOP WALL WITHOUT OVERLAPPING THE END FLAP ON THE REAR WALL WHEN ALLOF THE END FLAPS ON THE CARTON ARE FOLDED INWARDLY TO CLOSE THE END OFTHE CARTON AND AN ADHESIVE IS CARRIED ON THE UNDERSIDE OF THE UPPER ANDLOWER TABS IN AN AREA AND LOCATION TO BOND THE UPPER AND LOWER TABS TOTHE END FLAPS ON THE TOP AND REAR WALLS RESPECTIVELY.